89aadc4e52f6f77752286485116e84772f49288ae9dad5555ae2b86faa26d05f

Analysis

max time kernel
140s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
30-04-2024 06:23

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General

Target

2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe
Size

40KB
MD5

12f820c4525c6e14bea605a85d1ddba9
SHA1

e1302f4242761720c6ec77a2ba613b89a35a6f82
SHA256

89aadc4e52f6f77752286485116e84772f49288ae9dad5555ae2b86faa26d05f
SHA512

f170a1df9d530c06f44edf70ceb98ed440610a21fe9d5ed431ef77ab1bf792c30916af8cc2b6d652099e884d4f19427dfc0ce1ef917e7a000961d5df42fe2fd0
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/EI3:btB9g/WItCSsAGjX7e9N0hunKLYz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b58-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	gewos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 2596	5112	2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe	83
PID 5112 wrote to memory of 2596	5112	2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe	83
PID 5112 wrote to memory of 2596	5112	2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_12f820c4525c6e14bea605a85d1ddba9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
40KB

MD5
86facc8e5b8239b361d7ad7ce850b45f

SHA1
fbec3a62c2a256a60ddfab9f17718d2c78a092eb

SHA256
b763c815b55e87661dbc8481635ae921639e8501a80baff2bb273cb090e97209

SHA512
9c2bc31afdb93b0e5e1666b99af227b533d4caa7a25175632bead6d4d2dbee909cd646c01cbcfa60afe97510519d86d9cc4920ba820a05fbe9e8df701325ad8a

Download Submit
memory/2596-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5112-0-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/5112-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5112-8-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download